. A 5.0 kg bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 seconds. What is its acceleration in m/s2? (A) 0.21 (B) 0.53 (C) 9.8 (D) 5.2 (E) 0.46 What is its final kinetic energy (joules) at the end of 11 second? (A) 14 (B) 48 (C) 65 (D) 39 (E) 9.0

8) Your mass is 68.8 kg, and the sled s mass is 11.3 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 3.10 m/s. What will be your speed on the ice after jumping off? Question 8 options:   0.36 m/s   0.71 m/s   0.61 m/s   0.51 m/s   9) Your mass is 87.6 kg, and the sled s mass is 14.4 kg. The sled is moving by itself on the ice at 3.16 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? Question 9 options:   0.45 m/s   0.32 m/s   0.77 m/s   0.61 m/s

Suppose a clay model of a koala bear has a mass of 0.240 kg and slides on ice at a speed of 0.745 m/s. It runs into another clay model, which is initially motionless and has a mass of 0.310 kg. Both being soft clay, they naturally stick together. What is their final velocity (in m/s)? (Enter the magnitude.)

A 3.45 kg black ball traveling 4 m/s has a head on collision with a white one at rest. Using the velocities shown, calculate the mass of the white ball, Ignore friction and air resistance. 0 m/s 4 m/s 1.4 m/s 5.7 m/s